NO.PZ2015121802000013
问题如下:
Which of the following is the observation of effective risk management?
选项:
A.It intends to maximize potential return for a given degree of risk.
B.It intends to reduce risk for a given degree of potential returns.
C.It intends to eliminate any major risks the enterprise is facing to.
解释:
A is correct
Risk management is based on risk tolerance, in which it intends to maximize the expected return given a level of risk.
前面参考解析说:如果是最小化风险,那么大家都应该去投资无风险资产,甚至不去做投资。这显然不是有效风险管理的目的。
但是这种解释忽略了B选项的前提是在相同收益的前提下,无风险资产的收益通常是低于风险资产的。Markowitz的EF理论中,AB两种表述应该是等价的才对。
还是因为在风险管理理论中,AB的因果逻辑不同?A的控制变量是风险(确定risk tolerance),然后寻找最大收益;而B的控制变量是return,然而风险管理中并没有设定目标return的步骤,所以因果逻辑错误?是否可以这样理解?